(19)

(11)

EP 2 700 030 A1

(12)

(43) Date of publication: 26.02.2014 Bulletin 2014/09 (21) Application number: 11864117.4 (22) Date of filing: 19.04.2011

(51) International Patent Classification (IPC):  G06F 19/00(2011.01) (86) International application number: PCT/US2011/033080 (87) International publication number: WO 2012/144991 (26.10.2012 Gazette 2012/43)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (71) Applicant: Landmark Graphics Corporation Houston, TX 77042-3021 (US)	(72) Inventors: GONZALES, Adolfo Houston, Texas 77095 (US) MITCHELL, Robert Houston, Texas 77005 (US) (74) Representative: Jennings, Michael John et al A.A. Thornton & Co. 235 High Holborn London, WC1V 7LE London, WC1V 7LE (GB)